Journal of The Chinese Chemical Society最新文献

{"title":"Highly efficient recovery of vanadium from Abu Zeneima ferruginous siltstone, Southwestern Sinai, Egypt, by a novel polyimine-based chelating ligand","authors":"Bahig M. Atia,&nbsp;Hend A. Radwan,&nbsp;Walaa A. Kassab,&nbsp;Hazem K. A. Sarhan,&nbsp;Mohamed A. Gado,&nbsp;Adel E. Goda","doi":"10.1002/jccs.202400017","DOIUrl":"10.1002/jccs.202400017","url":null,"abstract":"<p>To extract V⁵⁺ ions from the ferruginous siltstone in the Abu Zeneima region of Southwestern Sinai, Egypt, a chelating polyimine ligand (PVAm-Ben) was synthesized via a condensation reaction involving polyvinyl amine and α-hydroxy ketone (Benzoin). The structure of PVAm-Ben underwent comprehensive characterization employing various techniques, namely; FT-IR, ¹H-NMR, ¹³C-NMR, and GC/MS analyses. Experimental factors controlling such as pH, time, initial concentration, dosage, temperature, and stripping, were systematically optimized to enhance measurement accuracy. Under conditions of 25°C, 0.015 mol/L, and 30 minutes, PVAm-Ben/C₂H₄Cl₂ exhibited remarkable retention capacity at pH 3. Linear regression analysis results suggested the release of a mole of H⁺ during the extraction process. The stability constant (log β = 2.1882) of the PVAm-Ben/V⁵⁺ complex was determined, yielding a value of 154.24. The stoichiometry mechanism between PVAm-Ben and V⁵⁺ ions displayed a linear correlation (slope: 0.9922), signifying 1 mole of PVAm-Ben reacting with 1 mole of vanadium. The pseudo-second-order kinetic model indicated an exothermic, spontaneous, and advantageous extraction process at low temperatures. Efficient stripping of PVAm-Ben/C₂H₄Cl₂ loaded with vanadium was achieved using 0.05 M NaOH with a 99% efficiency rate. Ultimately, enhanced variables were employed to yield a V₂O₅ concentrate with a vanadium content of 55% and a purity level of 98.21%.</p>","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140614416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Contents and Masthead: Journal of the Chinese Chemical Society 04/2024","authors":"","doi":"10.1002/jccs.1840","DOIUrl":"https://doi.org/10.1002/jccs.1840","url":null,"abstract":"","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jccs.1840","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140556365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of high-performance liquid chromatography-solid phase extraction-nuclear magnetic resonance in the identification of bioactive constituents from Hyptis spicigera leaf and H. brevipes aerial part","authors":"Fu-Chun Hsu,&nbsp;Sheng-Fa Tsai,&nbsp;Yi-Li Lin,&nbsp;Tsung-Hsin Hsieh,&nbsp;Chia-Chuan Chang,&nbsp;Shoei-Sheng Lee","doi":"10.1002/jccs.202400029","DOIUrl":"10.1002/jccs.202400029","url":null,"abstract":"<p>Two <i>Hyptis</i> plants endemic to Taiwan, <i>H. rhomboides and H. suaveolens</i>, contained xanthine oxidase inhibitors. To chemically investigate more herbs of the same genus, this study aimed to explore bioactive constituents from <i>Hyptis spicigera</i> leaf and the aerial part of <i>H. brevipes</i>, which would also enrich the chemotaxonomic basis for the <i>Hyptis</i> plants. The EtOH extract of the plant materials was fractionated by liquid-liquid partitioning, followed by separation over various chromatography. High-performance liquid chromatography-solid phase extraction-nuclear magnetic resonance hyphenation, a sustainable and environmentally friendly instrument, was applied to accelerate the chemical investigation of each subfraction. Eighteen isolates from <i>Hyptis spicigera</i> leaf and 14 compounds from <i>H. brevipes</i> aerial part were characterized. Of these, 12 compounds are rosmarinic acid derivatives, of which 9′-<i>O</i>-methyl melitrate A (<b>10</b>) and sagecoumarin methyl ester (<b>22</b>) are tentatively identified as new compounds. In total, 25 compounds were separated and characterized from <i>Hyptis spicigera</i> leaf and <i>H. brevipes</i> aerial part. Of these, seven of them (<b>2–4</b>, <b>11</b>, <b>12</b>, <b>18</b>, <b>20</b>) are in common between these two species, and 17 isolates (<b>2–4</b>, <b>8</b>-<b>14</b>, <b>22</b>, <b>23</b>, and <b>26</b>-<b>30</b>) are phenylpropanoids which are commonly distributed in the Labiatae family.</p>","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140575646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A simple, sensitive, and selective colorimetric chemosensor for sequential determination of dual analytes, Ce3+, H2PO4−, and its applications in the logic gate construction and the system of keypad lock","authors":"Hossein Tavallali,&nbsp;Abolfath Parhami,&nbsp;Maryam Sadat Salami,&nbsp;Mohammad Ali Karimi","doi":"10.1002/jccs.202300391","DOIUrl":"10.1002/jccs.202300391","url":null,"abstract":"<p>Sodium (E)-3-hydroxy-4-((2-hydroxynaphthalen-1-yl)diazenyl)naphthalene-1-sulfonate (Calcon, CAL), is employed for the first time as a reversible colorimetric chemosensor to detect and measure Ce³⁺ and H₂PO₄⁻ sequentially in the aqueous medium. The detection process has two steps. The interaction of CAL and Ce³⁺ in the first step with a noticeable color shift from purple to blue. Further, the reaction between CAL-Ce³⁺ and H₂PO₄⁻ shows a clear color return from blue back to initial purple similar to that for CAL. The UV–visible examination of this color return reveals that H₂PO₄⁻ removes Ce³⁺ and restores CAL content. The results showed that CAL and CAL-Ce³⁺ had a strong binding affinity and adequate detection limits for the Ce³⁺ and H₂PO₄⁻, respectively. For Ce³⁺, the linear range and detection limit are 1.20 × 10⁻⁶-1.02 × 10⁻⁴ and 2.0 × 10⁻⁷molL⁻¹, while for H₂PO₄⁻, they are 2.0 × 10⁻⁷-8.7 × 10⁻⁶ and 3.0 × 10⁻⁸ molL⁻¹. Finally, we measured these two ions in real samples using this methodology. Furthermore, the examination of the suggested receptor's logical behavior revealed that it can operate as a colorimetric chemosensor of the INHIBIT type, receiving chemical inputs and producing a UV–visible absorbance signal as the output. If Ce³⁺ and H₂PO₄⁻ inputs are added in proper order, the receptor may also function as a molecular “keypad lock.”</p>","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140575130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring the synergistic power: Green synthesis, comprehensive characterization, and unveiling the energy generation and storage aptitude of phyto-mediated Sb2O3-ZrO2 nanocomposite","authors":"Sundus Azhar,&nbsp;Khuram Shahzad Ahmad,&nbsp;Isaac Abrahams,&nbsp;Wang Lin,&nbsp;Ram K. Gupta,&nbsp;Essam A. Al-Ammar,&nbsp;Ghulam Abbas Ashraf","doi":"10.1002/jccs.202400037","DOIUrl":"10.1002/jccs.202400037","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Researchers are keen to reduce the over potential value through fabrication of electrocatalyst consisted of environmentally benign and inexpensive material. Supercapacitors on the other hand have gained immense attention in recent years as an energy storage device due to the high power density potential of these devices as compared to conventional batteries based storage system.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Aim</h3>\u0000 \u0000 <p>The research aims to synthesize nanoscale transition metal oxides (TMO) through green route. TMO based nanomaterials have vast role in energy related applications.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials &amp; methods</h3>\u0000 \u0000 <p>In this study, organic compounds of A. Viridis were used as reducing and stabilizing agents in the synthesis of binary nanocomposite Sb₂O₃–ZrO₂. The synthesized nanocomposite was characterized using x-ray diffraction, Fourier transform infrared spectroscopy, ultraviolet–visible spectroscopy, field emission scanning electron microscopy and energy dispersive spectroscopy. The electrode material was analyzed for supercapacitor potential using cyclic voltammetry and galvanostatic charge discharge techniques. HER and OER studies were also conducted using electrochemical impedance spectroscopy and linear sweep voltammetry. The synthesized material was also tested for stability.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results &amp; discussion</h3>\u0000 \u0000 <p>The crystal size was 15.9 nm. Optical band gap of 2.55 eV was obtained through Tauc plot. The capacitance value of 339.8 F/g at 2 mV/s and the specific capacitance of 100.6 F/g was obtained at 1 A/g. The overpotential value of 201 mV and Tafel value of 121 mV/dec was recorded for the HER, whereas the lower Tafel value of 106 mV/dec and over potential value of 383 mV was determined for OER. Electrode showed promising stability up to various cycles in case of both applications.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>The obtained results revealed the promising performance with excellent stability of fabricated electrode for super capacitor as well as water splitting studies.</p>\u0000 </section>\u0000 </div>","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140575199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Non-enzymatic hydrogen peroxide sensor based on palladium-decorated poly(thionine) modified glassy carbon electrode","authors":"Mutlu Sönmez Çelebi,&nbsp;Songül Kırlak Kara","doi":"10.1002/jccs.202400009","DOIUrl":"10.1002/jccs.202400009","url":null,"abstract":"<p>Glassy carbon electrode was modified with palladium-decorated conducting poly(thionine) film to develop a simple, cost-effective, and fast amperometric sensor for the detection of H₂O₂. Conducting PTH film served as a porous and stable support matrix for even distribution of the Pd nanomaterials. In order to get the maximum performance from the modified electrode system, experimental conditions were optimized using chronoamperometry. The Pd/PTH@GCE electrode showed maximum performance in buffer solution at pH = 7.5 meaning it is suitable for the detection of H₂O₂ at physiological pH (7.4). Scanning Electron Microscopy was performed for physical characterization of the modified electrodes using pencil graphite electrodes. The active surface area for Pd/PTH-modified GCE was calculated as 1.103 cm². The linear concentration range was determined as 0.2–7.0 mM and its sensitivity was determined as 40.0 μA mM⁻¹. The detection limit (LOD) of the sensor was calculated as 12.3 μM with a signal/noise ratio of 3.</p>","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140575321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Computational modeling of oligothiophenes-based donor molecules to boost optoelectronic attributes of organic solar cells","authors":"Adeel Mubarik,&nbsp;Faiza Shafiq,&nbsp;Ammasi Arunkumar,&nbsp;Xue-Hai Ju","doi":"10.1002/jccs.202400033","DOIUrl":"10.1002/jccs.202400033","url":null,"abstract":"<p>The computational modeling of seven oligothiophene-based donor molecules (TZ1–TZ7) designed by acceptor modification at the terminal position of the literature molecule (TZR) were discussed for organic solar cells (OSCs). DFT simulations using B3LYP/def2svp levels were performed to study the optoelectronic, and PV properties of TZ1–TZ7. A range of essential aspects for efficient small donor molecules like open circuit voltages (<i>V</i>_OC), excitation energy (<i>E</i>_x), dipole moment (μ), density of state (DOS), absorption maxima (<i>λ</i>_max), transition density matrix (TDM), binding energy (<i>E</i>_b), and frontier molecular orbitals (FMOs) of TZ1–TZ7 and TZR have also been investigated. DOS and FMOs analysis revealed a reduced energy gap (<i>E</i>_g) and effective charge transfer (CT) in the TZ1–TZ7 molecules. The absorption spectra were examined using TD-DFT. Due to smaller <i>E</i>_g, <i>E</i>_b, <i>E</i>_x, and higher <i>λ</i>_max, <i>μ</i>, the TZ1–TZ7 molecules exhibit remarkable optoelectronic properties. The computed <i>V</i>_OC (0.969–1.189) and fill factor (0.886–0.897) for TZ1–TZ7 lead to improved power conversion efficiency (PCE) ranging from 14.05% to 17.60%. All compounds are strongly recommended for fabricating efficient OSCs with excellent PV properties. The current work is a step towards environmentally friendly organic PV and will pave the way for future structural engineering research for the efficient material design of OSCs.</p>","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140323109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rapid determination of metallic additives in century eggs by microwave plasma-atomic emission spectrometer and microwave-assisted digestion","authors":"Ji-Hao Chen,&nbsp;Chi-Feng Weng,&nbsp;Wei-Chung Wang,&nbsp;Yi-Peng Kao,&nbsp;Jia-Lin Tsai,&nbsp;Yi-Ju Chen,&nbsp;Hui-Ling Lee,&nbsp;Tsung-Ting Shih","doi":"10.1002/jccs.202300435","DOIUrl":"10.1002/jccs.202300435","url":null,"abstract":"<p>Century eggs (also known as pídàn) are a widely used preserved food product in Taiwanese cuisine. Due to their peculiar appearance, pungent odor, and unusual texture, several consumers have raised concerns. Actually, some metallic additives are employed to control the quality of gelation of protein during the production of century eggs. Therefore, a method involving microwave plasma-atomic emission spectrometer and microwave-assisted digestion was proposed in this study. In addition, to clarify distribution information of metallic additives in century eggs, detailed analyses based on the egg structure were adopted. The linearities for Fe and Zn were obtained in the range of 0.1–5, and 0.02–1 mg L⁻¹ for Cu and Pb. The method detection limits for test metals were 0.06–0.036 mg L⁻¹. The measured values for the RM EGGS-1 sample agreed reasonably well with the reference values, demonstrating that the developed method is practical for routine analysis with lower instrument procurement/running cost. The analytical results for century eggs collected from local markets revealed diverse distributions of metal ions in different parts. Remarkably, this method can readily identify the metallic additives used during the production processes even in the presence of complicated matrices.</p>","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140204814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent progress in the preparation of theaflavins: “Synthesis, extraction and purification”","authors":"Jingli Wang,&nbsp;Xin Li,&nbsp;Yidan Liu,&nbsp;Yingzi Xiong,&nbsp;Can Zhang,&nbsp;Yunxia Dong,&nbsp;Maiquan Li,&nbsp;Xia Liu","doi":"10.1002/jccs.202400024","DOIUrl":"10.1002/jccs.202400024","url":null,"abstract":"<p>Theaflavins (TFs) are a kind of bioactive compound that formed during the fermentation stage of black tea. TFs play a vital role both in the sensory quality and the biological activity of black tea. However, the complex composition of black tea and the low content of TFs in black tea (0.3%–0.7%) make the technology for the preparation of high-purity TFs a great challenge. This review provides an updated overview for extracting, synthesizing and purifying of TFs. Molecular imprinting technology, an efficient method for extracting bioactive compounds, will be a promising method for the preparation of TFs with high purity. Overall, this review can provide a scientific basis and technical support for the preparation of TFs with high purity and will be helpful for the in-depth development and further research of TFs.</p>","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140154521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transition metal doped ZIF-8 for the detection of the heavy metal Hg(II)","authors":"Xin Zhe Chen,&nbsp;Yang Wu,&nbsp;Chen Xu,&nbsp;Zi Jun Wang,&nbsp;Min Min Liu","doi":"10.1002/jccs.202300457","DOIUrl":"10.1002/jccs.202300457","url":null,"abstract":"<p>The effects of heavy metals such as Hg(II) and Pb(II) on the human body are profound. Moreover, they pose significant concerns due to industrial development. Thus, the rapid and stable detection of heavy metal ions and related chemicals has emerged as an urgent issue. The application of Differential Pulse Stripping Voltammetry (DPSV) facilitated accurate and rapid detection of Hg²⁺ utilizing MOF materials and ZIF-8 as detection agents. Pure ZIF-8 served as the substrate material. Copper or nickel ions were individually introduced into the substrate material. This process resulted in the formation of bimetallic MOF materials. These materials were designated as CuZn and NiZn, respectively. Transition metal-doped materials were used to modify the glassy carbon electrode (GCE), resulting in a substantial enhancement in the detection performance of Hg²⁺. The CuZn/GCE configuration demonstrated the most significant enhancement. When compared to a GCE modified with pure ZIF-8, both sensitivity and the detection limit for free Hg²⁺ in the environment experienced increases of 450% and 64%, respectively. Stability and repeatability tests were conducted on the CuZn-modified GCE. Results indicated that the electrode proved to be very stable and showed strong selectivity in the presence of interfering ions. The sensor modified with CuZn shows promising potential for monitoring trace Hg²⁺ levels.</p>","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140124948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}